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Re: definition of kRenderQuality_xxx constants missing in Windows QT SDK
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Re: definition of kRenderQuality_xxx constants missing in Windows QT SDK


  • Subject: Re: definition of kRenderQuality_xxx constants missing in Windows QT SDK
  • From: Brad Ford <email@hidden>
  • Date: Wed, 25 Apr 2007 07:16:08 -0700

These are constants defined in <AudioUnit/AudioUnitProperties.h> on Mac OS X.

Since we don't have these headers on Windows, you can just define them yourself somewhere:

enum {
	kRenderQuality_Max								= 0x7F,
	kRenderQuality_High								= 0x60,
	kRenderQuality_Medium							= 0x40,
	kRenderQuality_Low								= 0x20,
	kRenderQuality_Min								= 0
};

Feel free to file a bug so that we put these in one of the QT headers in a future release of the sdk.

-Brad Ford
QuickTime Engineering



On Apr 25, 2007, at 7:08 AM, Andrea Barbieri wrote:

Hello,

looking in QuickTimeComponents.h for kQTSCAudioPropertyID_RenderQuality one can find mention of the following constants:

kRenderQuality_Max, kRenderQuality_High, kRenderQuality_Medium,
kRenderQuality_Low, kRenderQuality_Min

which (allegedly) are defined in AudioUnitProperties.h but unfortunately there is no such include file for the Windows QT SDK version 7.1

an indication of what such constant values might be is provided in Movies.h for the property:
kQTAudioPropertyID_RenderQuality


0x00 (kRenderQuality_Min) to 0x7F (kRenderQuality_Max)

does annyone know the values for all the render quality constants?

best regards,
andrea
--
Andrea Barbieri
Moving Image Research http://www.movingimageresearch.com/
The Workshop, Hampton Lane, Bristol, BS6 6LE, UK
Tel: +44 117 9732200 FAX: +44 117 9732210
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